quickjs-tart

quickjs-based runtime for wallet-core logic
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ftpupload.c (4701B)

      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
      9  *
     10  * This software is licensed as described in the file COPYING, which
     11  * you should have received as part of this distribution. The terms
     12  * are also available at https://curl.se/docs/copyright.html.
     13  *
     14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
     15  * copies of the Software, and permit persons to whom the Software is
     16  * furnished to do so, under the terms of the COPYING file.
     17  *
     18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
     19  * KIND, either express or implied.
     20  *
     21  * SPDX-License-Identifier: curl
     22  *
     23  ***************************************************************************/
     24 #include <stdio.h>
     25 #include <string.h>
     26 
     27 #include <curl/curl.h>
     28 #include <sys/types.h>
     29 #include <sys/stat.h>
     30 #include <fcntl.h>
     31 #ifdef UNDER_CE
     32 #define strerror(e) "?"
     33 #else
     34 #include <errno.h>
     35 #endif
     36 #ifdef _WIN32
     37 #include <io.h>
     38 #undef stat
     39 #define stat _stat
     40 #else
     41 #include <unistd.h>
     42 #endif
     43 
     44 /* <DESC>
     45  * Performs an FTP upload and renames the file just after a successful
     46  * transfer.
     47  * </DESC>
     48  */
     49 
     50 #define LOCAL_FILE      "/tmp/uploadthis.txt"
     51 #define UPLOAD_FILE_AS  "while-uploading.txt"
     52 #define REMOTE_URL      "ftp://example.com/"  UPLOAD_FILE_AS
     53 #define RENAME_FILE_TO  "renamed-and-fine.txt"
     54 
     55 /* NOTE: if you want this example to work on Windows with libcurl as a DLL,
     56    you MUST also provide a read callback with CURLOPT_READFUNCTION. Failing to
     57    do so might give you a crash since a DLL may not use the variable's memory
     58    when passed in to it from an app like this. */
     59 static size_t read_callback(char *ptr, size_t size, size_t nmemb, void *stream)
     60 {
     61   unsigned long nread;
     62   /* in real-world cases, this would probably get this data differently
     63      as this fread() stuff is exactly what the library already would do
     64      by default internally */
     65   size_t retcode = fread(ptr, size, nmemb, stream);
     66 
     67   if(retcode > 0) {
     68     nread = (unsigned long)retcode;
     69     fprintf(stderr, "*** We read %lu bytes from file\n", nread);
     70   }
     71 
     72   return retcode;
     73 }
     74 
     75 int main(void)
     76 {
     77   CURL *curl;
     78   CURLcode res;
     79   FILE *hd_src;
     80   struct stat file_info;
     81   unsigned long fsize;
     82 
     83   struct curl_slist *headerlist = NULL;
     84   static const char buf_1 [] = "RNFR " UPLOAD_FILE_AS;
     85   static const char buf_2 [] = "RNTO " RENAME_FILE_TO;
     86 
     87   /* get the file size of the local file */
     88   if(stat(LOCAL_FILE, &file_info)) {
     89     printf("Couldn't open '%s': %s\n", LOCAL_FILE, strerror(errno));
     90     return 1;
     91   }
     92   fsize = (unsigned long)file_info.st_size;
     93 
     94   printf("Local file size: %lu bytes.\n", fsize);
     95 
     96   /* get a FILE * of the same file */
     97   hd_src = fopen(LOCAL_FILE, "rb");
     98   if(!hd_src)
     99     return 2;
    100 
    101   /* In Windows, this inits the Winsock stuff */
    102   curl_global_init(CURL_GLOBAL_ALL);
    103 
    104   /* get a curl handle */
    105   curl = curl_easy_init();
    106   if(curl) {
    107     /* build a list of commands to pass to libcurl */
    108     headerlist = curl_slist_append(headerlist, buf_1);
    109     headerlist = curl_slist_append(headerlist, buf_2);
    110 
    111     /* we want to use our own read function */
    112     curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
    113 
    114     /* enable uploading */
    115     curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
    116 
    117     /* specify target */
    118     curl_easy_setopt(curl, CURLOPT_URL, REMOTE_URL);
    119 
    120     /* pass in that last of FTP commands to run after the transfer */
    121     curl_easy_setopt(curl, CURLOPT_POSTQUOTE, headerlist);
    122 
    123     /* now specify which file to upload */
    124     curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
    125 
    126     /* Set the size of the file to upload (optional).  If you give a *_LARGE
    127        option you MUST make sure that the type of the passed-in argument is a
    128        curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you must
    129        make sure that to pass in a type 'long' argument. */
    130     curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
    131                      (curl_off_t)fsize);
    132 
    133     /* Now run off and do what you have been told! */
    134     res = curl_easy_perform(curl);
    135     /* Check for errors */
    136     if(res != CURLE_OK)
    137       fprintf(stderr, "curl_easy_perform() failed: %s\n",
    138               curl_easy_strerror(res));
    139 
    140     /* clean up the FTP commands list */
    141     curl_slist_free_all(headerlist);
    142 
    143     /* always cleanup */
    144     curl_easy_cleanup(curl);
    145   }
    146   fclose(hd_src); /* close the local file */
    147 
    148   curl_global_cleanup();
    149   return 0;
    150 }